Honolulu climate
Honolulu (Hawaii, United States) has a tropical savanna (dry summer) climate (Köppen As). The average temperature over the year is 25 °C77 °F, and about 772 mm30 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Honolulu climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2577 | 2272 | 2374 | 712.8 |
| Feb | 2576 | 2271 | 2374 | 823.2 |
| Mar | 2577 | 2271 | 2374 | 943.7 |
| Apr | 2678 | 2373 | 2475 | 542.1 |
| May | 2780 | 2374 | 2577 | 461.8 |
| Jun | 2781 | 2476 | 2679 | 371.5 |
| Jul | 2882 | 2577 | 2679 | 401.6 |
| Aug | 2883 | 2577 | 2780 | 441.7 |
| Sep | 2883 | 2578 | 2780 | 502.0 |
| Oct | 2882 | 2577 | 2679 | 742.9 |
| Nov | 2780 | 2475 | 2578 | 863.4 |
| Dec | 2578 | 2373 | 2476 | 933.7 |
| Year | 2883 | 2271 | 2577 | 77230 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 75% | 52% | 4.3 | 10:58 |
| Feb | 75% | 57% | 4.9 | 11:25 |
| Mar | 75% | 61% | 5.5 | 11:58 |
| Apr | 75% | 58% | 6.3 | 12:37 |
| May | 74% | 50% | 6.8 | 13:09 |
| Jun | 74% | 48% | 7.1 | 13:25 |
| Jul | 74% | 47% | 7.0 | 13:19 |
| Aug | 74% | 47% | 6.7 | 12:51 |
| Sep | 74% | 47% | 6.2 | 12:14 |
| Oct | 75% | 56% | 5.2 | 11:37 |
| Nov | 76% | 58% | 4.4 | 11:05 |
| Dec | 77% | 54% | 3.9 | 10:50 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Honolulu is like
The warmest month is September, with an average high of 28 °C83 °F and a low of 25 °C78 °F. The coldest is February, when highs average 25 °C76 °F and lows 22 °C71 °F. Seasonal differences are small — just 3.7 °C6.7 °F between the warmest and the coolest month.
Annual precipitation is moderate at about 772 mm30 in. The wettest three-month stretch is October–December, which brings 33% of the annual total. The wettest month is March (94 mm3.7 in), the driest is June (37 mm1.5 in).
Relative humidity ranges from 74% in September to 77% in December. The clearest skies (lowest average cloud amount, 47%) are typical of July. Average wind speed near the ground ranges from 17 km/h (11 mph) in January to 22 km/h (14 mph) in July. Daylight lasts from about 10.8 hours in December to 13.4 hours in June.
Best time to visit Honolulu
Based on these averages, the most comfortable months for sightseeing and outdoor activities are all year: average highs of 25 °C76 °F to 28 °C83 °F with 37 mm1.5 in to 94 mm3.7 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Honolulu
- Wetter months (October–March) — highs 2576 to 28 °C82 °F, lows 2271 to 25 °C77 °F, about 83 mm3.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
- Drier months (April–September) — highs 2678 to 28 °C83 °F, lows 2373 to 25 °C78 °F, about 45 mm1.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Honolulu compares
Of the 222 places in the United States covered by World Climates, Honolulu is the 3rd warmest by annual mean temperature and the 146th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Lagarto (Brazil, As), Santo Antônio de Jesus (Brazil, As) and Itabaiana (Brazil, As).
Nearby places
Frequently asked questions
What is the warmest month in Honolulu?
September is the warmest month in Honolulu, with an average high of 28 °C (83 °F) and an average low of 25 °C (78 °F).
What is the coldest month in Honolulu?
February is the coldest month, with an average high of 25 °C (76 °F) and an average low of 22 °C (71 °F).
When does it rain the most in Honolulu?
March is the wettest month with about 94 mm (3.7 in) of precipitation; June is the driest with about 37 mm (1.5 in).
What is the best time to visit Honolulu?
Judging by long-term averages, the most comfortable months are all year.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 78 m, while Honolulu lies at about 5 m. Temperatures on this page were therefore adjusted by +0.5 °C0.9 °F using the standard lapse rate of 6.5 °C per 1,000 m.